Oxidation thiab aging cov tshuaj tiv thaiv yog nquag tshwm sim nyob rau hauv cov txheej txheem ntawm kev ua thiab siv cov yas, roj hmab thiab lwm yam ntaub ntawv polymer, ua rau txo qis ntawm cov khoom zoo li cuam tshuam lub zog, anti-warping zog, tensile zog thiab elongation thiab lwm yam khoom.